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perfidy

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noun per·fi·dy \ˈpər-fə-dē\

Simple Definition of perfidy

  • : the act of betraying someone or something : the state of not being loyal

Source: Merriam-Webster's Learner's Dictionary

Full Definition of perfidy

plural perfidies

  1. 1 :  the quality or state of being faithless or disloyal :  treachery

  2. 2 :  an act or an instance of disloyalty

Examples of perfidy in a sentence

  1. A man who built his entire administration upon demanding unctuous loyalty from his allies now finds himself wounded by their shabby betrayal. You'd have to go back to one of Spain's humpbacked Hapsburgs to find court perfidy of the variety that is currently depleting the president's power. —Jack Hitt, Mother Jones, January & February 2006

  2. The petty Robespierres on the public stage appeal to “the real America” to rise up in fury against presidential perfidies; yet in poll after poll the real America keeps telling Washington that it has gone bonkers. —David L. Kirp, Nation, 8 Mar. 1999

  3. I lived there off and on for twenty years, through graduate studies, marriage, the end of marriage, the perfidies of middle age, all the while unaware of passion. —Susan Barron, New England Monthly, October 1989

  4. They are guilty of perfidy.

  5. <he decided to forgive his wife's perfidy, choosing to ascribe it to a moment of uncharacteristic weakness>



Origin of perfidy

Latin perfidia, from perfidus faithless, from per- detrimental to + fides faith — more at per-, faith


First Known Use: 1592


PERFIDY Defined for Kids

perfidy

play
noun per·fi·dy \ˈpər-fə-dē\

Definition of perfidy for Students

plural perfidies

  1. :  treachery 2





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